EP1025653A4 - Procede de mesure et de reduction de decalages de frequence dans des reseaux repartis par satellite/sans fil et systeme de communication correspondant - Google Patents

Procede de mesure et de reduction de decalages de frequence dans des reseaux repartis par satellite/sans fil et systeme de communication correspondant

Info

Publication number
EP1025653A4
EP1025653A4 EP98953472A EP98953472A EP1025653A4 EP 1025653 A4 EP1025653 A4 EP 1025653A4 EP 98953472 A EP98953472 A EP 98953472A EP 98953472 A EP98953472 A EP 98953472A EP 1025653 A4 EP1025653 A4 EP 1025653A4
Authority
EP
European Patent Office
Prior art keywords
measurement
reduction
communications system
wireless networks
frequency offsets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98953472A
Other languages
German (de)
English (en)
Other versions
EP1025653A1 (fr
EP1025653B1 (fr
Inventor
Anil K Agarwal
Charles Richard Thorne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Viasat Inc
Original Assignee
Comsat Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comsat Corp filed Critical Comsat Corp
Publication of EP1025653A1 publication Critical patent/EP1025653A1/fr
Publication of EP1025653A4 publication Critical patent/EP1025653A4/fr
Application granted granted Critical
Publication of EP1025653B1 publication Critical patent/EP1025653B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18543—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for adaptation of transmission parameters, e.g. power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/208—Frequency-division multiple access [FDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP98953472A 1997-10-20 1998-10-20 Procédé de mesure et de réduction de décalages de frequence dans des réseaux repartis par satellite/sans fil et système de communication correspondant Expired - Lifetime EP1025653B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US6467397P 1997-10-20 1997-10-20
US6249797P 1997-10-20 1997-10-20
US6249697P 1997-10-20 1997-10-20
US62496P 1997-10-20
US64673P 1997-10-20
US62497P 1997-10-20
PCT/US1998/021637 WO1999021290A1 (fr) 1997-10-20 1998-10-20 Procede de mesure et de reduction de decalages de frequence dans des reseaux repartis par satellite/sans fil et systeme de communication correspondant

Publications (3)

Publication Number Publication Date
EP1025653A1 EP1025653A1 (fr) 2000-08-09
EP1025653A4 true EP1025653A4 (fr) 2001-02-07
EP1025653B1 EP1025653B1 (fr) 2007-04-18

Family

ID=27370308

Family Applications (6)

Application Number Title Priority Date Filing Date
EP98956107A Expired - Lifetime EP0960489B1 (fr) 1997-10-20 1998-10-20 Procede de generation d'horloge locale precise sans effet doppler dans un reseau par satellite ou sans fil
EP98956116.2A Expired - Lifetime EP0960490B1 (fr) 1997-10-20 1998-10-20 Procede d'acquisition et de synchronisation de terminaux dans un systeme a acces multiples par repartition dans le temps (amrt) sans fil
EP98951081A Expired - Lifetime EP1032986B1 (fr) 1997-10-20 1998-10-20 Procede de transmission de donnees par selections de ligne, de donnees par paquets et de cellules atm dans un systeme a acces multiples par repartition dans le temps (amrt) sans fil/par satellite
EP98953469A Expired - Lifetime EP1042932B1 (fr) 1997-10-20 1998-10-20 Procede de commande de la puissance d'une voie ascendante pour reseaux a satellites distribues destine a compenser un fading du a la pluie
EP98953472A Expired - Lifetime EP1025653B1 (fr) 1997-10-20 1998-10-20 Procédé de mesure et de réduction de décalages de frequence dans des réseaux repartis par satellite/sans fil et système de communication correspondant
EP98954967A Withdrawn EP1044513A4 (fr) 1997-10-20 1998-10-20 Systeme de commande de sortie de puissance pour systeme de communications rf

Family Applications Before (4)

Application Number Title Priority Date Filing Date
EP98956107A Expired - Lifetime EP0960489B1 (fr) 1997-10-20 1998-10-20 Procede de generation d'horloge locale precise sans effet doppler dans un reseau par satellite ou sans fil
EP98956116.2A Expired - Lifetime EP0960490B1 (fr) 1997-10-20 1998-10-20 Procede d'acquisition et de synchronisation de terminaux dans un systeme a acces multiples par repartition dans le temps (amrt) sans fil
EP98951081A Expired - Lifetime EP1032986B1 (fr) 1997-10-20 1998-10-20 Procede de transmission de donnees par selections de ligne, de donnees par paquets et de cellules atm dans un systeme a acces multiples par repartition dans le temps (amrt) sans fil/par satellite
EP98953469A Expired - Lifetime EP1042932B1 (fr) 1997-10-20 1998-10-20 Procede de commande de la puissance d'une voie ascendante pour reseaux a satellites distribues destine a compenser un fading du a la pluie

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98954967A Withdrawn EP1044513A4 (fr) 1997-10-20 1998-10-20 Systeme de commande de sortie de puissance pour systeme de communications rf

Country Status (8)

Country Link
US (2) US7599658B1 (fr)
EP (6) EP0960489B1 (fr)
JP (2) JP2000505993A (fr)
AU (8) AU1083799A (fr)
CA (3) CA2275408C (fr)
DE (4) DE69836798T2 (fr)
IL (8) IL130560A (fr)
WO (8) WO1999021295A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638878A (zh) * 2012-03-19 2012-08-15 西安交通大学 基于闭环频偏控制的分布式波束形成方法

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7215650B1 (en) 1999-08-16 2007-05-08 Viasat, Inc. Adaptive data rate control for narrowcast networks
FR2801747B1 (fr) * 1999-11-29 2006-09-08 Cit Alcatel Transmission a haut et bas debit pour la liaison de telecommande d'un satellite
FR2804559A1 (fr) * 2000-02-01 2001-08-03 Sta Satellite Terminal Access Procede de telecommunication par satellite, terminal de telecommunication par satellite correspondant
ES2269215T3 (es) * 2000-03-29 2007-04-01 Samsung Electronics Co., Ltd. Procedimiento y aparato para la transmision y la recepcion inalambricas de paquetes.
KR100667738B1 (ko) 2000-03-29 2007-01-11 삼성전자주식회사 무선 패킷 송수신 장치 및 그 방법
KR100657253B1 (ko) * 2000-03-29 2006-12-14 삼성전자주식회사 무선 패킷 송수신 장치 및 그 방법
EP1275217B1 (fr) * 2000-04-21 2012-12-26 Broadcom Corporation Indicateur de performance pour un système de communication haute vitesse
AU2001259993B2 (en) * 2000-05-25 2006-12-07 Soma Networks, Inc. Quality dependent data communication channel
IL143820A0 (en) * 2000-06-26 2002-04-21 Hughes Electronics Corp Uplink power control system for satellite communication system employing on-board satellite processing and fade estimation
US7043199B2 (en) 2001-06-06 2006-05-09 Hughes Network Systems Llc Uplink power control system for satellite communication system employing on-board satellite processing and fade estimation
WO2002075960A1 (fr) 2001-03-16 2002-09-26 U.S. Monolithics, L.L.C. Systeme et procede de reglage de puissance sur le trajet montant
US7006791B2 (en) * 2001-03-16 2006-02-28 U.S. Monolithics, L.L.C. System and method for uplink power control by detecting amplifier compression point using dc current detection
EP1244227B1 (fr) * 2001-03-22 2005-07-20 Siemens Mobile Communications S.p.A. Procédé de commande automatique de puissance de transmission et de commutation en mode phy dans un système de télécommunication adaptif en mode phy
US7027530B2 (en) 2001-04-11 2006-04-11 Atheros Communications, Inc. Method and apparatus for maximizing receiver performance utilizing mid-packet gain changes
US8498368B1 (en) 2001-04-11 2013-07-30 Qualcomm Incorporated Method and system for optimizing gain changes by identifying modulation type and rate
US7010266B2 (en) 2001-05-24 2006-03-07 Viasat, Inc. Power control systems and methods for use in satellite-based data communications systems
DE10134764A1 (de) * 2001-07-13 2003-01-30 Deutsche Telekom Ag Satelliten-Managementsystem für eine effiziente Auslastung der Transponderbandbreite
US7941047B2 (en) * 2001-07-18 2011-05-10 Alcatel-Lucent Usa Inc. Method for engineering connections in a dynamically reconfigurable photonic switched network
EP1309105A1 (fr) * 2001-11-01 2003-05-07 Ascom Systec AG Terminal à double mode satellite/cellulaire
DE60117750T2 (de) 2001-12-05 2007-02-15 Siemens Mobile Communications S.P.A. Optimale Hysterese basierend auf zwei verschiedenen Parametern für die Sendeleistungsregelung und für die Umschaltungssteuerung des PHY Modus in adaptiven PHY Modus Systemen
DE60324672D1 (de) * 2002-05-29 2008-12-24 Thomson Licensing Verfahren und vorrichtung zur ermöglichung der übertragung des signals eines drahtlosen rückkanals in einem satellitenkommunikationssystem
US7463707B2 (en) * 2002-09-03 2008-12-09 Broadcom Corporation Upstream frequency control for docsis based satellite systems
DE60209208T2 (de) * 2002-09-20 2006-10-19 Siemens Mobile Communications S.P.A. Einstellung der Leistung des Aufwärtskanals für ein drahtloses Punkt zu Multipunkt Kommunikationssystem
US7992174B2 (en) * 2004-03-29 2011-08-02 Broadcom Corporation Method and system for downstream time stamp in an adaptive modulation based satellite modem termination system
US8036205B2 (en) * 2005-06-13 2011-10-11 Qualcomm Incorporated Methods and apparatus for supporting uplinks with remote base stations
US7574224B2 (en) * 2005-06-13 2009-08-11 Qualcomm Incorporated Methods and apparatus for performing timing synchronization with base stations
US7974261B2 (en) 2005-06-13 2011-07-05 Qualcomm Incorporated Basestation methods and apparatus for supporting timing synchronization
US7991362B2 (en) 2005-07-20 2011-08-02 Qualcomm Incorporated Methods and apparatus for supporting timing and/or frequency corrections in a wireless communications system
US8798638B2 (en) 2005-07-20 2014-08-05 Qualcomm Incorporated Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections
US20070165757A1 (en) * 2006-01-18 2007-07-19 Arie Heiman Method and system for an improved cellular interference cancelling diversity receiver
US8687744B2 (en) * 2006-01-18 2014-04-01 Broadcom Corporation Method and system for an improved cellular diversity receiver
US7965664B2 (en) * 2006-05-31 2011-06-21 Honeywell International Inc. Apparatus and method for integrating wireless field devices with a wired protocol in a process control system
WO2008011264A2 (fr) * 2006-06-30 2008-01-24 Viasat, Inc. Détection de non linéarité à distance par l'intermédiaire d'un tramage de puissance en salves
JP4974026B2 (ja) * 2007-03-27 2012-07-11 パナソニック株式会社 無線ネットワークシステム
US8730086B2 (en) * 2008-08-26 2014-05-20 Viasat, Inc. Weather detection using satellite communication signals
US8634296B2 (en) * 2009-06-16 2014-01-21 Viasat, Inc. Dynamic bandwidth resource allocation for satellite downlinks
JP5480908B2 (ja) 2010-01-22 2014-04-23 パナソニック株式会社 電力収集装置、電力計測装置及び電力収集方法
CN101902808B (zh) * 2010-05-21 2013-03-06 南京邮电大学 一种卫星通信系统的上行链路自适应闭环功率控制方法
KR101211474B1 (ko) 2011-06-30 2012-12-12 에이피위성통신주식회사 위성통신 시스템의 단말국에서의 오차 보상장치 및 그 방법
US9025516B2 (en) * 2011-10-13 2015-05-05 Comtech Ef Data Corp. Method and system for optimizing data throughput performance for dynamic link conditions using adaptive coding and modulation (ACM) and dynamic single channel per carrier (dSCPC) techniques
US8787873B1 (en) 2011-11-04 2014-07-22 Plusn Llc System and method for communicating using bandwidth on demand
US9356684B2 (en) 2012-07-24 2016-05-31 Agence Spatiale Europeenne Uplink power control method and apparatus for satellite communications networks
CA2814303A1 (fr) 2013-04-26 2014-10-26 Cellphone-Mate, Inc. Appareil et procedes pour amplificateurs de signaux de frequence radio
US10367706B2 (en) 2016-11-21 2019-07-30 At&T Intellectual Property I, L.P. Automatic identification of solutions for weather-related network impairments
WO2022074418A1 (fr) * 2020-10-07 2022-04-14 Eutelsat S A Procédé de compression de données recueillies par un satellite leo à partir d'une pluralité de dispositifs iot et de transmission à une station de base, et système associé

Family Cites Families (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4228538A (en) * 1977-12-15 1980-10-14 Harris Corporation Real-time adaptive power control in satellite communications systems
CA1262382A (fr) * 1984-05-10 1989-10-17 Nec Corporation Dispositif pour alleger la charge d'operations d'une station de reference dans un reseau amrt sans reduire la disponibilite des trames
JPS61184014A (ja) * 1985-02-08 1986-08-16 Nec Corp 時分割多元接続通信における初期接続方式及び装置
US4675863A (en) * 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4868795A (en) * 1985-08-05 1989-09-19 Terra Marine Engineering, Inc. Power leveling telemetry system
JPS6346824A (ja) * 1986-08-14 1988-02-27 Kokusai Denshin Denwa Co Ltd <Kdd> 送信電力制御方式
US4745599A (en) * 1987-01-05 1988-05-17 General Electric Company Random access communication system with contention scheduling of subpacketized data transmissions and scheduled retransmission of unsuccessful subpackets
DE3729586A1 (de) * 1987-09-04 1989-03-16 Ant Nachrichtentech Verfahren zum ausgleichen von durch den doppler-effekt hervorgerufenen laufzeit-verschiebungen der bursts in einem tdma-rahmen sowie anordnung
US4901368A (en) * 1987-10-19 1990-02-13 American Telephone And Telegraph Company Frequency translation correction scheme for satellite communication system
JP2845889B2 (ja) * 1988-05-16 1999-01-13 株式会社日立製作所 衛星通信方式及び衛星通信システム
US4932070A (en) * 1988-08-22 1990-06-05 Scientific Atlanta Mechanism for deriving accurate frequency reference for satellite communications burst demodulator
JPH02256329A (ja) * 1988-12-01 1990-10-17 Nec Corp 復調器制御方式
US4941199A (en) * 1989-04-06 1990-07-10 Scientific Atlanta Uplink power control mechanism for maintaining constant output power from satellite transponder
JP2746685B2 (ja) * 1989-09-06 1998-05-06 富士通株式会社 送信出力制御回路
FI86352C (fi) * 1989-11-14 1992-08-10 Nokia Oy Ab Digitaliskt radiolaenksystem och foerfarande foer reglering av en saendingseffekt i ett digitaliskt radiolaenksystem.
US4999583A (en) * 1990-02-28 1991-03-12 Hughes Aircraft Company Amplifier drive controller
SE467332B (sv) * 1990-06-21 1992-06-29 Ericsson Telefon Ab L M Foerfarande foer effektreglering i ett digitalt mobiltelefonisystem
US5257397A (en) * 1990-08-13 1993-10-26 At&T Bell Laboratories Mobile data telephone
US5321721A (en) * 1991-09-13 1994-06-14 Sony Corporation Spread spectrum communication system and transmitter-receiver
EP0548939B1 (fr) * 1991-12-26 2000-09-13 Nec Corporation Système de commande de puissance d'émission permettant de garder une qualité constante du signal dans un réseau de communication mobile
JPH0677963A (ja) * 1992-07-07 1994-03-18 Hitachi Ltd 通信方式および端末装置
US5465399A (en) * 1992-08-19 1995-11-07 The Boeing Company Apparatus and method for controlling transmitted power in a radio network
JP2953260B2 (ja) * 1993-07-05 1999-09-27 ケイディディ株式会社 周波数オフセット補償方法
US6088590A (en) * 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
SE9304119D0 (sv) * 1993-12-10 1993-12-10 Ericsson Ge Mobile Communicat Apparatuses and mobile stations for providing packet data communication in digital TDMA cellular systems
US5768684A (en) * 1994-03-04 1998-06-16 Motorola, Inc. Method and apparatus for bi-directional power control in a digital communication system
GB2287371B (en) * 1994-03-11 1998-12-16 Motorola Israel Ltd Radio transmitter power amplifier calibration
US5659545A (en) * 1994-11-15 1997-08-19 Motorola, Inc. Apparatus for mobile unit acquisition in a satellite communication system and method therefor
JP3467888B2 (ja) * 1995-02-08 2003-11-17 三菱電機株式会社 受信装置及び送受信装置
US5710756A (en) * 1995-02-13 1998-01-20 Netro Corporation Burst-error resistant ATM microwave link and network
US5732328A (en) * 1995-04-25 1998-03-24 Lucent Technologies Inc. Method for power control in wireless networks for communicating multiple information classes
US5697056A (en) * 1995-05-08 1997-12-09 Motorola, Inc. Communication system in which radio subscriber units mitigate interference
US5598419A (en) * 1995-07-17 1997-01-28 National Semiconductor Corporation Dynamic synchronization code detection window
US5678208A (en) * 1995-07-19 1997-10-14 Motorola, Inc. Transmission system
EP0779717A3 (fr) * 1995-12-13 2000-08-02 Nec Corporation Méthode et système de gestion temporelle d'un système de communication par satellite
US5729536A (en) * 1996-04-10 1998-03-17 Lucent Technologies Cellular system architectures supporting data services
US5812554A (en) * 1996-05-28 1998-09-22 Advanced Micro Devices, Inc. Efficiency of a network having a minimum data transmission time
US5864547A (en) * 1996-08-21 1999-01-26 Hughes Electronics Corporation Method and system for controlling uplink power in a high data rate satellite communication system employing on-board demodulation and remodulation
US5754942A (en) * 1996-09-09 1998-05-19 Hughes Electronics Corporation Satellite power level monitoring system and method using digital signal processing
US6212360B1 (en) * 1997-04-09 2001-04-03 Ge Capital Spacenet Services, Inc. Methods and apparatus for controlling earth-station transmitted power in a VSAT network
US5999832A (en) * 1997-07-31 1999-12-07 Vannatta; Louis J. Method of and apparatus for controlling a transmit power of a communication device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638878A (zh) * 2012-03-19 2012-08-15 西安交通大学 基于闭环频偏控制的分布式波束形成方法
CN102638878B (zh) * 2012-03-19 2014-06-04 西安交通大学 基于闭环频偏控制的分布式波束形成方法

Also Published As

Publication number Publication date
IL135786A0 (en) 2001-05-20
IL130560A0 (en) 2000-06-01
WO1999021296A1 (fr) 1999-04-29
JP2000505993A (ja) 2000-05-16
US7925211B2 (en) 2011-04-12
WO1999021287A9 (fr) 1999-07-29
AU1083799A (en) 1999-05-10
AU1083899A (en) 1999-05-10
EP1025653A1 (fr) 2000-08-09
US20090221317A1 (en) 2009-09-03
AU1270499A (en) 1999-05-10
EP0960490A1 (fr) 1999-12-01
JP2000508155A (ja) 2000-06-27
JP3390180B2 (ja) 2003-03-24
CA2306717C (fr) 2003-09-16
DE69836798D1 (de) 2007-02-15
IL130560A (en) 2004-02-19
EP1044513A1 (fr) 2000-10-18
EP0960489A1 (fr) 1999-12-01
AU1271299A (en) 1999-05-10
CA2275406A1 (fr) 1999-04-29
WO1999021329A1 (fr) 1999-04-29
CA2275408A1 (fr) 1999-04-29
IL135783A (en) 2008-12-29
IL130559A (en) 2003-06-24
AU9696498A (en) 1999-05-10
DE69814448T2 (de) 2004-03-18
US7599658B1 (en) 2009-10-06
EP0960490A4 (fr) 2001-02-07
DE69837614T2 (de) 2007-12-27
CA2306717A1 (fr) 1999-04-29
EP0960489B1 (fr) 2007-01-03
WO1999021294A1 (fr) 1999-04-29
IL130559A0 (en) 2000-06-01
DE69833217D1 (de) 2006-04-06
EP1042932A4 (fr) 2001-01-31
CA2275406C (fr) 2006-01-31
IL135786A (en) 2007-06-17
WO1999021291A1 (fr) 1999-04-29
CA2275408C (fr) 2003-04-01
DE69814448D1 (de) 2003-06-12
EP1032986A1 (fr) 2000-09-06
WO1999021287A1 (fr) 1999-04-29
AU1188199A (en) 1999-05-10
WO1999021290A9 (fr) 1999-06-24
DE69833217T2 (de) 2006-09-28
WO1999021378A1 (fr) 1999-04-29
EP1025653B1 (fr) 2007-04-18
IL135785A (en) 2004-06-20
IL135785A0 (en) 2001-05-20
IL135783A0 (en) 2001-05-20
WO1999021290A1 (fr) 1999-04-29
EP0960489A4 (fr) 2001-01-17
DE69837614D1 (de) 2007-05-31
EP1042932B1 (fr) 2006-01-11
EP1032986A4 (fr) 2001-03-21
AU1083599A (en) 1999-05-10
WO1999021295A1 (fr) 1999-04-29
EP1044513A4 (fr) 2001-01-17
DE69836798T2 (de) 2007-10-11
IL135784A0 (en) 2001-05-20
AU1083699A (en) 1999-05-10
EP1042932A1 (fr) 2000-10-11
EP0960490B1 (fr) 2014-06-18
EP1032986B1 (fr) 2003-05-07

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